Expression FieldValue(IParser parser, Expression var, Expression valueType, Type schemaType, bool initialize)
{
Expression body;
if (schemaType.IsBondStruct() && var.Type.IsValueType())
{
// Special handling for properties of struct types: we deserialize into
// a temp variable and then assign the value to the property.
var temp = Expression.Variable(var.Type, $"{var.Type.Name}_temp");
body = Expression.Block(
new[] { temp },
Value(parser, temp, valueType, schemaType, true),
Expression.Assign(var, temp));
}
else
{
body = Value(parser, var, valueType, schemaType, initialize);
}
if (schemaType.IsBondContainer() || schemaType.IsBondStruct() || schemaType.IsBondNullable())
{
var expectedType = Expression.Constant(schemaType.GetBondDataType());
return(PrunedExpression.IfThenElse(
Expression.Equal(valueType, expectedType),
body,
ThrowExpression.InvalidTypeException(expectedType, valueType)));
}
return(body);
}
public static Expression While(Expression whileCondition, Expression body, LabelTarget breakLabel)
{
return(Expression.Loop(
PrunedExpression.IfThenElse(
whileCondition,
body,
Expression.Break(breakLabel)),
breakLabel));
}
Expression Container(IParser parser, RuntimeSchema schema)
{
var expectedValueType = schema.HasValue ? schema.TypeDef.element.id : (BondDataType?)null;
return(parser.Container(expectedValueType,
(valueParser, elementType, next, count, arraySegment) =>
{
var body = ControlExpression.While(next,
Expression.Block(
writer.WriteItemBegin(),
schema.HasValue ?
Value(valueParser, elementType, schema.GetElementSchema()) :
Value(valueParser, elementType),
writer.WriteItemEnd()));
var blob = parser.Blob(count);
if ((blob != null) || (arraySegment != null))
{
body = PrunedExpression.IfThenElse(
Expression.Equal(elementType, Expression.Constant(BondDataType.BT_INT8)),
writer.WriteBytes(arraySegment ?? blob),
body);
// For binary protocols we can write blob directly using protocols's WriteBytes
// even if the container is not a blob (blob is BT_LIST of BT_INT8).
if (binaryWriter)
{
body = PrunedExpression.IfThenElse(
Expression.Equal(elementType, Expression.Constant(BondDataType.BT_UINT8)),
writer.WriteBytes(arraySegment ?? blob),
body);
}
}
return Expression.Block(
writer.WriteContainerBegin(count, elementType),
body,
writer.WriteContainerEnd());
}));
}
